Amazon FBM Profit Calculator
Self-fulfilment margin analysis with shipping, packing, and overhead costs.
Calculator setup
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Core pricing
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Fulfilment
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Other
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Specialist notes
Calculate true profit for Amazon Fulfilled by Merchant orders including carrier shipping rates, packing materials, labour, and referral fees.
FBM is often more profitable than FBA for heavy, bulky, or slow-moving products where FBA storage fees would accumulate.
Use Amazon's Buy Shipping to access discounted carrier rates — often 20–30% cheaper than negotiating directly for low-volume sellers.
FBM sellers need a strong inventory management system. Stockouts directly hurt your seller metrics and Buy Box eligibility.
Compare FBM vs FBA margins monthly. As your volume grows, FBA often becomes more cost-effective due to scale.
When Does Amazon FBM Make Financial Sense?
Amazon FBM (Fulfilled by Merchant) profit calculation requires including all fulfilment costs that Amazon FBA bundles into their fees: outbound carrier shipping, packaging materials, labour time, and allocated overhead. FBM works best for oversized or heavy products where FBA size-tier fees are prohibitive, slow-moving SKUs that would accumulate FBA storage fees, and sellers with existing warehouse infrastructure. The key advantage of FBM is full cost control — you're not subject to FBA fee increases or unexpected storage charges.